costaronvscosterosTell them apart

Quick tell: costaron is a verb, costeros is a noun, so they fill different roles in a sentence.

Which to use

“costaron” is a verb and “costeros” is a noun - they look or sound alike but fill different roles in a sentence.

#31,727
“costaron” frequency rank
#33,511
“costeros” frequency rank
65238
confusion score

Side-by-Side Comparison

Feature costaron costeros
Definition Tercera persona del plural (ellos, ellas; ustedes, 2.ª persona) del pretérito perfecto simple de indicativo de costar. Forma del plural de costero.

Where the eye mixes costaron and costeros

Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. costaron and costeros follow the identical consonant-vowel pattern (CVCCVCVC). Same shape at a glance is often the real trap, independent of shared letters.

8 ch
costaron
8 ch
costeros

Why the eye confuses costaron with costeros

These two trip readers on the page rather than in the ear: costaron is [kosˈt̪aɾõn] while costeros is [kosˈt̪eɾos]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 65238, derived from the frequency rank of both members and their visual similarity.

costaron is recorded at frequency rank #31,727, classified as averb, pronounced [kosˈt̪aɾõn]. costeros is at rank #33,511, tagged as anoun, pronounced [kosˈt̪eɾos].

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 65238, this pair ranks #43,243 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of costaron vs costeros

Shared letters: corst. Private to "costaron": an. Private to "costeros": e.

"costaron" · 8 letters · shape CVCCVCVC  ·  "costeros" · 8 letters · shape CVCCVCVC

Known mistypes of this pair

  • costaron ← ccostaron · cosatron · cosstaron · costaorn · costarno · costaronn · costarron · costraon
  • costeros ← ccosteros · cosetros · cossteros · costeors · costeross · costerros · costerso · costreos

Frequently Asked Questions

Can "costaron" and "costeros" be used interchangeably?
No - they are not even the same part of speech. "costaron" is a verb and "costeros" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "costaron" or "costeros" show up more?
"costaron" is the more common of the two: it sits at frequency rank #31,727 in our Spanish list, against #33,511 for "costeros". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "costaron" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "costeros" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #43,243 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "costaron" and "costeros" also get mixed up with nearby pairs, the highest-scored neighbour is "contemos vs costeros". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #43,243 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list